From 10627228be20d317752ebfaf8b8b54469a4793ea Mon Sep 17 00:00:00 2001 From: Giuseppe Scrivano Date: Thu, 30 Jul 2020 22:59:45 +0200 Subject: volumes: do not recurse when chowning keep the file ownership when chowning and honor the user namespace mappings. Closes: https://github.com/containers/podman/issues/7130 Signed-off-by: Giuseppe Scrivano --- libpod/container_internal.go | 35 ++++++++++++++++++++++------------- 1 file changed, 22 insertions(+), 13 deletions(-) (limited to 'libpod') diff --git a/libpod/container_internal.go b/libpod/container_internal.go index a5208a0df..f3f11f945 100644 --- a/libpod/container_internal.go +++ b/libpod/container_internal.go @@ -1534,9 +1534,6 @@ func (c *Container) chownVolume(volumeName string) error { return errors.Wrapf(err, "error retrieving named volume %s for container %s", volumeName, c.ID()) } - uid := int(c.config.Spec.Process.User.UID) - gid := int(c.config.Spec.Process.User.GID) - vol.lock.Lock() defer vol.lock.Unlock() @@ -1547,22 +1544,34 @@ func (c *Container) chownVolume(volumeName string) error { if vol.state.NeedsChown { vol.state.NeedsChown = false + + uid := int(c.config.Spec.Process.User.UID) + gid := int(c.config.Spec.Process.User.GID) + + if c.config.IDMappings.UIDMap != nil { + p := idtools.IDPair{ + UID: uid, + GID: gid, + } + mappings := idtools.NewIDMappingsFromMaps(c.config.IDMappings.UIDMap, c.config.IDMappings.GIDMap) + newPair, err := mappings.ToHost(p) + if err != nil { + return errors.Wrapf(err, "error mapping user %d:%d", uid, gid) + } + uid = newPair.UID + gid = newPair.GID + } + vol.state.UIDChowned = uid vol.state.GIDChowned = gid if err := vol.save(); err != nil { return err } - err := filepath.Walk(vol.MountPoint(), func(path string, info os.FileInfo, err error) error { - if err != nil { - return err - } - if err := os.Lchown(path, uid, gid); err != nil { - return err - } - return nil - }) - if err != nil { + + mountPoint := vol.MountPoint() + + if err := os.Lchown(mountPoint, uid, gid); err != nil { return err } } -- cgit v1.2.3-54-g00ecf